(historical) a title of Fujiwara no Korechika, Heian-period nobleman, who first assumed this post

(historical) Synonym of 准大臣 (Jun-daijin): title of an honorary grand minister equal to a vice-daijin; in the same honors between the 内大臣 (naidaijin, “minister of the center”) and the 大納言 (dainagon, “upper counselor”)

a courtesy name of Takashina no Kishi/Takako, Heian-period poet

(literally) know the other side and yourself, a hundred battles will not be perilous